Abbott-Smith Manual Greek Lexicon
στόμαχος (G4751)
1 * στόμαχος , -ου, ὁ ( στόμα ), prop., a mouth, an opening ; in early Gk. writers, the throat ; of the opening of the stomach (Arist.); in later writers (Plut., al.), the stomach : I Ti 5:23 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain